摘要:
http://acm.hdu.edu.cn/showproblem.php?pid=1071按要求求出面积即可View Code #include <stdio.h>int main(){ int t; double x0,y0,x1,y1,x2,y2; double k,b; double a; double s; scanf("%d",&t); while(t--) { scanf("%lf%lf%lf%lf%lf%lf",&x0,&y0,&x1,&y1,&x2,&y2); k=(y 阅读全文